Hay trailer



FIG. 1 is a perspective view of a hay trailer showing our design;

FIG. 2 is an enlarged front end elevational view thereof;

FIG. 3 is an enlarged back end elevational view thereof;

FIG. 4 is an enlarged left side elevational view thereof, the right side being a mirror image;

FIG. 5 is an enlarged top plan view thereof; and,

FIG. 6 is an enlarged bottom plan view thereof. 

The ornamental design for a hay trailer, as shown and described. 